Ao Smith pr1922 Dc Coil Relay Icp Electric Heaters

Product Description

The AO SMITH pr1922 is a DC coil relay designed for use in electric heater applications within ICP units. The relay operates on a continuous coil voltage of 28.6 volts DC, with a pick-up voltage range of 16.5 to 22 volts and a drop-out maximum of 2.2 volts. These characteristics make it well-suited for precise switching control in low-voltage relay circuits. Licensed HVAC technicians and electricians typically install this component during troubleshooting or scheduled maintenance when a failed relay is identified as the root cause of heater malfunction.

This relay is intended for electric heating applications within ICP unit configurations. It fits into the control circuit where low-voltage DC coil switching is required to energize heating elements or related loads. The DC coil design and the specified voltage thresholds make it appropriate for systems where tight pick-up and drop-out tolerances are necessary for reliable operation.

Key Features

• DC coil design with continuous coil voltage rating of 28.6 volts
• Pick-up voltage range of 16.5 volts minimum to 22 volts maximum for reliable actuation
• Drop-out maximum of 2.2 volts for controlled de-energization
• Designed for electric heater relay circuits in ICP units
• Compact relay form factor suited to control board and panel mounting configurations

Compatibility

Designed as a replacement relay for electric heaters in ICP units, as specified by the manufacturer application data.

Installation Notes

Installation should be performed by a qualified HVAC technician or licensed electrician. Disconnect and lock out all power to the unit before removing or installing the relay. Verify coil voltage and circuit polarity match the relay specifications before energizing the system. Follow applicable NEC guidelines for low-voltage control wiring during installation.

Technical Specifications

• Coil Type: DC
• Continuous Coil Voltage: 28.6 volts
• Pick-Up Voltage Minimum: 16.5 volts
• Pick-Up Voltage Maximum: 22 volts
• Drop-Out Voltage Maximum: 2.2 volts
• Country of Origin: China

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: pr1922